Chewing Gum is a common method of causing the pressure in your ears to equalize after being exposed to high elevations.
no
snake
no
Snake the line
it doesn't matter
A scratch behind the ears.
to unstop condensate drain lines
They have big ears. And the sounds echo.
Use a toilet snake
i suggest you just replace it
Using a plunger is going to be much more effective.
A sectional rodding machine is the best bet.